metathorax light yellow; pleural suture narrow, reddish black, with dense 

 rows of chestnut brown dots at base; episternum with reddish brown distal 

 margin and 4 large dots on surface; margin of epimeron restricted to 

 suture. 



♦75 



FIGURES 473-475. Potamophylax e xc i s u s Mart.: 



473— head, dorsal (A) and ventral (B), dark stripe at occipital foramen, lateral 

 (C); 474 — labrum; 475 — pronotum ( A), mesonotum (B). 



Legs reddish brown. Fore femur (Figure 476) with 2 primary setae in 

 form of strong, yellow spines ventrally; posterior seta situated more 

 basally, short, dark, slightly longer. 

 2^0 Sclerite of segment 9 (Figure 477) mat yellow, with dots in 2 rows 

 which converge in middle at anterior margin. Median setae longer than 

 others, anterior -angle setae slightly shorter; intermediate seta and both 

 secondary setae between medioanal setae, moderately long, thin; 18 — 20 

 other setae. 



335 



